Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1995a6048e55d84…

MALICIOUS

PDF

12.3 KB
MD5: 409e6ac9302b48ecbccada7c6d2ef601 SHA-1: 57ba966e8ff3c23eff4b3057dc7e47b3458b36d9 SHA-256: a1995a6048e55d847fd68fdc3ca247f6092ef9039291d5c93f209cdfbd79fa90
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded script content and is flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it's designed to exploit vulnerabilities. The presence of an embedded file further supports the delivery of a malicious payload. The exact nature of the exploit and payload is not fully discernible from the provided script, but the overall pattern suggests a malicious PDF designed for exploitation.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
ca9cd30ae50e4bca70b7dd065d283dbaead940d3025d5d324492104731ee207d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11825 bytes